阅读说明：本技术 一种舞动式低条纹气泡率的光学玻璃制造方法 (Method for manufacturing waving type optical glass with low stripe bubble rate ) 是由 沈杰 于 2020-05-15 设计创作，主要内容包括：本发明公开了一种舞动式低条纹气泡率的光学玻璃制造方法,属于光学玻璃领域,一种舞动式低条纹气泡率的光学玻璃制造方法,通过向隔离膨胀条层内充气,可以使熔融物料与舞动隔离容器内壁分隔,相较于现有技术,有效避免舞动隔离容器上隔热材料腐蚀使得熔融物料内掺入杂质的情况发生,进而有效避免成型的光学玻璃上条纹的发生率,提高产品质量,同时舞动气条膨胀成条状,通过控制充气和放气,条状的舞动气条呈现动态,不断起伏,实现在熔炼过程中不断对熔融物料的隔断式搅动,同时由于物料与舞动隔离容器的分隔,使得字啊熔炼过程,始终进行隔断式搅动,从而有效释放其内部的气泡,降低光学玻璃成品的气泡率,进一步提高光学玻璃的质量。(The invention discloses a method for manufacturing waved optical glass with low stripe bubble rate, belonging to the field of optical glass, which can separate a molten material from the inner wall of a waved isolation container by charging air into an isolation expansion strip layer, effectively avoiding the occurrence of impurity doped in the molten material due to the corrosion of a heat insulating material on the waved isolation container, further effectively avoiding the occurrence rate of stripes on the formed optical glass, improving the product quality, simultaneously expanding the waved air strips into strips, controlling the charging and discharging of the air strips to enable the strip-shaped waved air strips to be dynamic and to fluctuate continuously so as to realize the continuous isolated stirring of the molten material in the smelting process, and simultaneously enabling the character isolated smelting process to be constantly stirred due to the isolation of the material and the waved isolation container so as to effectively release bubbles in the interior of the glass, the bubble rate of the optical glass finished product is reduced, and the quality of the optical glass is further improved.)

1. A method for manufacturing waved optical glass with low stripe bubble rate is characterized in that: the method comprises the following steps:

s1, firstly, smashing and uniformly mixing the raw materials of the optical glass, and then melting at the temperature of 1400 ℃ and 1450 ℃ to obtain a molten material;

s2, introducing the molten materials into a swing isolation container (1) of a smelting container, heating for smelting, keeping the smelting time at 5-7 hours, and carrying out isolated stirring in the smelting process;

s3, pouring the smelted materials into a mold, annealing, and naturally cooling to form glass;

and S4, performing striping, and performing mechanical cutting treatment on the bubble part to obtain the finished optical glass.

2. The method of claim 1, wherein the step of forming the optical glass comprises: the smelting temperature in the S2 is not lower than 1400 ℃.

3. The method of claim 1, wherein the step of forming the optical glass comprises: smelting container galloping keeps apart container (1) inner wall fixedly connected with and keeps apart inflation strip layer (2), galloping keeps apart container (1) left and right sides two bottom difference fixedly connected with left trachea (31) and right trachea (32), galloping keeps apart container (1) inner wall inner bottom fixedly connected with seals and separates disconnected ring (5), seals and separates many output trachea (33) of the inside fixedly connected with of disconnected ring (5), many output trachea (33) all run through seals and separate disconnected ring (5), and left trachea (31), right trachea (32) all communicate with each other with many output trachea (33), many output trachea (33) upper end fixedly connected with a plurality of evenly distributed's bear passageway (7), bear passageway (7) and keep apart inflation strip layer (2) and match each other.

4. The method of claim 3, wherein the step of forming the optical glass comprises: the bearing channel (7) comprises a vertical air pipe (71) and a bearing ball end (72) connected to the upper end of the vertical air pipe (71), and the vertical air pipe (71) is communicated with the multiple output air pipes (33).

5. The method of claim 4, wherein the step of manufacturing the optical glass comprises: the bearing ball end (72) is of a spherical structure, and a through hole communicated with the vertical air pipe (71) is formed in the middle of the bearing ball end (72).

6. The method of claim 3, wherein the step of forming the optical glass comprises: keep apart inflation strip layer (2) including with dance keep apart container (1) inner wall attached isolation layer (21), with dance keep apart container (1) interior bottom flat bed (22) relative and a plurality of dance air strip (23) of inlaying on bottom flat bed (22), dance air strip (23) and bearing channel (7) phase-match.

7. The method of claim 6, wherein the step of forming the optical glass comprises: a plurality of pairs of inelastic ropes (6) are fixedly connected between the lower end of the bottom flat layer (22) and the inner bottom end of the galloping isolation container (1), and the inelastic ropes (6) are distributed at intervals with the galloping air bars (23).

8. The method of claim 7, wherein the step of manufacturing the optical glass comprises: the outer end of the galloping air bar (23) is fixedly connected with a plurality of semi-closed air pipes (8) which are uniformly distributed, and the semi-closed air pipes (8) are communicated with the interior of the galloping air bar (23).

9. The method of claim 8, wherein the step of forming the optical glass comprises: the isolation expansion strip layer (2) and the semi-closed air pipe (8) are both prepared by mixing polyurethane aerogel and novel light aerogel according to the volume ratio of 1: 1.5-2.

10. A method for producing an optical glass having a low schlieren fraction as claimed in any one of claims 1 to 9, wherein: the specific operation steps of the isolated stirring in the step S2 are as follows:

s21, simultaneously inflating air between the galloping isolation container (1) and the isolation expansion strip layer (2) through the left air pipe (31) and the right air pipe (32) until the plurality of galloping air strips (23) and the semi-closed air pipe (8) are gradually extruded and expanded to the same height by air, and simultaneously separating the isolation expansion strip layer (2) from the inner wall of the galloping isolation container (1) under the action of the air;

s22, controlling the left air pipe (31) to continuously intake air and the right air pipe (32) to exhaust air, so that the left galloping air bar (23) keeps a high expansion degree, and the right galloping air bar (23) gradually decreases in expansion degree;

s23, controlling the left air pipe (31) to continuously deflate after the deflation time reaches 1/2-2/3 of the inflation time in S21, and controlling the right air pipe (32) to intake air so that the expansion degree of the dancing air bar (23) on the left side is gradually reduced, and the dancing air bar (23) on the right side keeps higher expansion degree;

s24, continuously repeating S22-S23 in the smelting process, so that the plurality of galloping gas strips (23) continuously present a wavy shape, and the continuous isolated stirring of the molten material in the smelting process is realized.

Technical Field

The invention relates to the field of optical glass, in particular to a method for manufacturing waved optical glass with low stripe bubble rate.

Background

Glass capable of changing the direction of light propagation and capable of changing the relative spectral distribution of ultraviolet, visible or infrared light. Optical glass in the narrow sense means colorless optical glass; the optical glass in a broad sense also includes colored optical glass, laser glass, quartz optical glass, radiation-resistant glass, ultraviolet infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optic glass and photochromic glass. The optical glass can be used for manufacturing lenses, prisms, reflectors, windows and the like in optical instruments. Components made of optical glass are critical elements in optical instruments.

The optical glass can be divided into three major categories, ① colorless optical glass, which is almost completely transparent in a relatively broad band of visible and near infrared, and the most used optical glass, hundreds of brands depending on the difference in refractive index and dispersion, crown optical glass (represented by K) and flint optical glass (represented by F), crown glass is borosilicate glass, and flint glass is added with alumina, both of which have a major difference in refractive index and dispersion, so that the spectral element is used more often.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a method for manufacturing waved optical glass with low stripe bubble rate, which can separate a molten material from the inner wall of a waved isolation container by inflating the isolation expansion strip layer, effectively avoid the occurrence of impurity doped in the molten material due to the corrosion of a heat insulating material on the waved isolation container compared with the prior art, further effectively avoid the occurrence rate of stripes on the formed optical glass, improve the product quality, simultaneously expand the waved air strips into strips, control the inflation and deflation to ensure that the strip-shaped waved air strips are dynamic and continuously fluctuated so as to realize the continuous stirring of the molten material in the smelting process, and simultaneously ensure that the character partition type stirring is always carried out in the smelting process due to the separation of the material and the waved isolation container so as to effectively release bubbles in the glass, the bubble rate of the optical glass finished product is reduced, and the quality of the optical glass is further improved.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A method for manufacturing optical glass with low stripe bubble rate in a waving way comprises the following steps:

s1, firstly, smashing and uniformly mixing the raw materials of the optical glass, and then melting at the temperature of 1400 ℃ and 1450 ℃ to obtain a molten material;

s2, introducing the molten materials into a waving isolation container, heating for smelting, keeping the smelting time at 5-7 hours, and carrying out isolated stirring in the smelting process;

s3, pouring the smelted materials into a mold, annealing, and naturally cooling to form glass;

and S4, performing striping, and performing mechanical cutting treatment on the bubble part to obtain the finished optical glass.

Further, the smelting temperature in the S2 is not lower than 1400 ℃.

Furthermore, the inner wall of the galloping isolation container of the smelting container is fixedly connected with an isolation expansion strip layer, the left bottom end and the right bottom end of the galloping isolation container are respectively and fixedly connected with a left air pipe and a right air pipe, the inner bottom end of the inner wall of the galloping isolation container is fixedly connected with a sealing isolation ring, the inner part of the sealing isolation ring is fixedly connected with a plurality of output air pipes, the plurality of output air pipes penetrate through the sealing isolation ring, two ends of each output air pipe are respectively provided with an electromagnetic valve, the quantity between the isolation layer and the inner wall of the galloping isolation container can be effectively controlled during inflation, the left air pipe and the right air pipe are respectively communicated with the plurality of output air pipes, the upper ends of the plurality of output air pipes are fixedly connected with a plurality of uniformly distributed bearing channels, the bearing channels are matched with the isolation expansion strip layer, the bearing channels can be used as inflation channels on one hand, on, the inflation is convenient, the upward convex expansion is generated, and the molten material is convenient to stir.

Furthermore, the bearing channel comprises a vertical air pipe and a bearing ball end connected to the upper end of the vertical air pipe, and the vertical air pipe is communicated with the multiple output air pipes.

Further, bear the ball end and be spherical structure, make it when forming the support to the air strip of waving, be difficult for forming comparatively sharp point atress to the air strip of waving to it is difficult for receiving the damage to protect it, and bear the ball end middle part and open chisel have with the communicating perforating hole of vertical trachea, the gas of being convenient for overflows from this department, thereby makes the air strip of waving inflation.

Further, keep apart the inflation strip layer include with the dance keep apart the attached isolation layer of container inner wall mutually, with dance keep apart the container in the bottom flat bed relative of bottom and a plurality of dance gas strips of inlaying on the bottom flat bed, dance gas strips and bearing the weight of the passageway phase-match, when aerifing, part gas enters into between isolation layer and the dance keep apart the container inner wall through many output trachea to make its inflation, make melting material and dance keep apart the container inner wall and separate, compare in prior art, effectively avoid on the dance keep apart the container thermal insulation material corruption make the condition of mixing impurity in the melting material take place, effectively avoid simultaneously causing the condition of impurity wide range distribution in the melting material because of the stirring, thereby effectively avoid the incidence of stripe on the fashioned optical glass, improve product quality.

Further, fixedly connected with is many to inelastic rope between the bottom in the end flat bed lower extreme and the dance isolation container, and is many right inelastic rope distributes with dance gas strip is alternate respectively, makes the end flat bed around the bottom dance gas strip through inelastic rope under the effect of dragging of inelastic rope, is difficult for upwards taking place great deformation to effectively guarantee that end flat bed is difficult for taking place great deformation, lead to end flat bed and dance gas strip to be cubic inflation that makes progress, make the dance gas strip can be with strip and melting material contact, thereby make its inside melting material stirring effect better.

Further, dance gas strip outer end fixedly connected with a plurality of evenly distributed's semi-closed trachea, semi-closed trachea communicates with each other with dance gas strip is inside, and semi-closed trachea can effectively increase dance gas strip tip and melting material contact range for stir the scope wider, and then make the dance gas strip better to the stirring effect of melting material.

Furthermore, the isolation expansion strip layer and the semi-closed air pipe are both prepared by mixing polyurethane aerogel and novel light aerogel according to the volume ratio of 1:1.5-2, the polyurethane aerogel has elasticity similar to rubber and can recover deformation after deformation, so that the galloping air strip can have the elasticity of deformation, meanwhile, the novel light aerogel mainly comprises a boron nitride thin layer, and the boron nitride is a crystal formed by nitrogen atoms and boron atoms. Research shows that the aerogel material only loses less than 1% of mechanical strength when stored at the high temperature of 1400 ℃ for one week, so that the normal mechanical deformation performance of the isolating expansion strip layer can be effectively maintained under the condition of high-temperature smelting, the isolating expansion strip layer is not easy to age, and the service life of the aerogel material is long at the temperature.

Further, the specific operation steps of the interrupted stirring in S2 are as follows:

s21, simultaneously inflating air between the galloping isolation container and the isolation expansion strip layer through the left air pipe and the right air pipe until the galloping air strips and the semi-closed air pipes are gradually extruded and expanded to the same height by air, and simultaneously separating the isolation expansion strip layer from the inner wall of the galloping isolation container under the action of the air;

s22, controlling the left air pipe to continuously intake air and the right air pipe to exhaust air, so that the left galloping air bar keeps a higher expansion degree, and the right galloping air bar gradually decreases in expansion degree;

s23, controlling the left air pipe to continuously deflate after the deflation time reaches 1/2-2/3 of the inflation time in S21, and controlling the right air pipe to intake air so that the expansion degree of the galloping air bar on the left side is gradually reduced, and the galloping air bar on the right side keeps higher expansion degree;

s24, continuously repeating S22-S23 in the smelting process, so that the plurality of galloping gas strips continuously present a wavy shape, and the continuous isolated stirring of the molten material in the smelting process is realized.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the scheme, the molten material can be separated from the inner wall of the galloping isolation container by inflating the inner wall of the isolation expansion strip layer, compared with the prior art, the situation that impurities are doped in the molten material due to corrosion of a heat insulation material on the galloping isolation container is effectively avoided, the occurrence rate of stripes on the formed optical glass is further effectively avoided, the product quality is improved, meanwhile, the galloping strip layer is expanded into a strip shape, the strip-shaped galloping strip layer is dynamic and continuously fluctuated by controlling inflation and deflation, the continuous partition type stirring of the molten material in the smelting process is realized, and meanwhile, due to the separation of the material and the galloping isolation container, the partition type stirring is always carried out in the smelting process, so that internal bubbles are effectively released, the bubble rate of the optical glass finished product is reduced, and the quality of the optical glass is further improved.

(2) The smelting temperature in S2 is not lower than 1400 ℃.

(3) The inner wall of the galloping isolation container of the smelting container is fixedly connected with an isolation expansion strip layer, the left bottom end and the right bottom end of the galloping isolation container are respectively and fixedly connected with a left air pipe and a right air pipe, the inner bottom end of the inner wall of the galloping isolation container is fixedly connected with a sealing and isolating ring, the inner part of the sealing and isolating ring is fixedly connected with a plurality of output air pipes, the plurality of output air pipes all penetrate through the sealing and isolating ring, two ends of each output air pipe are respectively provided with an electromagnetic valve, the quantity between the isolation layer and the inner wall of the galloping isolation container can be effectively controlled during inflation, the left air pipe and the right air pipe are both communicated with the plurality of output air pipes, the upper ends of the plurality of output air pipes are fixedly connected with a plurality of uniformly distributed bearing channels, the bearing channels are matched with the isolation expansion strip layer, the bearing channels can be used as inflation channels on one, facilitating the stirring of the molten material.

(4) The bearing channel comprises a vertical air pipe and a bearing ball end connected to the upper end of the vertical air pipe, and the vertical air pipe is communicated with the multiple output air pipes.

(5) The bearing ball end is of a spherical structure, so that when the bearing ball end supports the galloping air bars, the bearing ball end is not easy to form a sharp point stress on the galloping air bars, the bearing ball end is protected from being damaged easily, a through hole communicated with a vertical air pipe is formed in the middle of the bearing ball end, and gas is convenient to overflow from the through hole, so that the galloping air bars are expanded.

(6) Keep apart the inflation strip layer and include the isolation layer attached mutually with the dance isolation container inner wall, with dance isolation container inner bottom relative bed layer and a plurality of dance gas strips of inlaying on bed layer, dance gas strips and bearing the weight of the passageway phase-match, when aerifing, part gas enters into between isolation layer and the dance isolation container inner wall through many output trachea, thereby make its inflation, make fused material and dance isolation container inner wall separate, compare in prior art, effectively avoid waving the condition of mixing impurity in the fused material to take place of thermal insulation material corruption on the isolation container, effectively avoid simultaneously causing the condition of the great scope distribution of impurity in the fused material because of the stirring, thereby effectively avoid the incidence of stripe on the fashioned optical glass, improve product quality.

(7) Bottom flat bed lower extreme and dance keep apart in the container fixedly connected with many pairs of inelastic ropes between the bottom, many to inelastic rope respectively with dance move the alternate distribution of gas strip, make bottom flat bed around the gas strip of waving through inelastic rope under the pulling effect of inelastic rope, be difficult for upwards taking place great deformation, thereby effectively guarantee that bottom flat bed is difficult for taking place great deformation, lead to bottom flat bed and dance gas strip to be cubic inflation that makes progress, make dance gas strip can be with strip and melting material contact, thereby make its inside melting material stirring effect better.

(8) The semi-closed trachea that waves a plurality of evenly distributed of gas strip outer end fixedly connected with, semi-closed trachea and the inside intercommunication of the gas strip that waves, semi-closed trachea can effectively increase and wave gas strip tip and melting material contact range for stir the scope wider, and then make and wave the gas strip better to the stirring effect of melting material.

(9) The isolation expansion strip layer and the semi-closed air pipe are both made of polyurethane aerogel and novel light aerogel through mixing according to the volume ratio of 1:1.5-2, the polyurethane aerogel has elasticity similar to rubber, deformation can be recovered after deformation, the galloping air strip can have the elasticity of deformation, meanwhile, the novel light aerogel mainly comprises a boron nitride thin layer, and the boron nitride is a crystal formed by nitrogen atoms and boron atoms. Research shows that the aerogel material only loses less than 1% of mechanical strength when stored at the high temperature of 1400 ℃ for one week, so that the normal mechanical deformation performance of the isolating expansion strip layer can be effectively maintained under the condition of high-temperature smelting, the isolating expansion strip layer is not easy to age, and the service life of the aerogel material is long at the temperature.

Drawings

FIG. 1 is a principal flow diagram of the present invention;

FIG. 2 is a schematic view of the front side of the dancing isolation container of the present invention;

FIG. 3 is a schematic view of the configuration of the bottom portion of the dancing isolation container of the present invention;

FIG. 4 is a schematic view of the structure at A in FIG. 3;

FIG. 5 is a schematic view of the configuration of the present invention in which the plurality of dancing strips within the dancing isolation container are expanded to the same degree;

FIG. 6 is a schematic view of the multiple dancing strips of the present invention in a low left and high right configuration;

FIG. 7 is a schematic view of the multiple dancing strips of the present invention in a high right and low left configuration.

The reference numbers in the figures illustrate:

1 waving an isolation container, 2 isolating expansion strip layers, 21 isolating layers, 22 bottom flat layers, 23 waving air strips, 31 left air pipes, 32 right air pipes, 33 multi-output air pipes, 5 sealing isolating rings, 6 inelastic ropes, 7 bearing channels, 71 vertical air pipes, 72 bearing ball ends and 8 semi-closed air pipes.

Detailed Description

The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.